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How to Control LED’s Using GY-30 Light Intensity Sensor Module Interfacing with Arduino Uno

Category: Arduino Compatible Kits Tags: Arduino Uno, GY-30 Light Intensity, Sensor Module

HARDWARE REQUIRED

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (programmable platform for Arduino)

Click To Download :https://www.arduino.cc/en/Main/Software

SPECIFICATIONS

BH1750FVI Board GY-30 Light Intensity Sensor Module

3.3V to 5 V working DC voltage and I/O
Wide range and high resolution is from 1- 65535 lx.
Detection Range- 0.11 lx to 100000 lx.
Illuminance to digital converter
It contains 3 Measurement modes.

PIN DESCRIPTION

BH1750FVI Board GY-30 Light Intensity Sensor Module

Pin	Name (Arduino)	Description
1	GND	Ground (It grounds the Input and completes the circuit path)
2	VCC	3.3V (Recommended Voltage)
3	SDA	Serial Data (Serial Data used for I2C communication)
4	SCL	Serial Clock (Serial Clock used for I2C serial clock)
5	Digital Pins 2	LED (Attached via Breadboard)
5	Digital Pins 3	LED (Attached via Breadboard)
5	Digital Pins 4	LED (Attached via Breadboard)
5	Digital Pins 5	LED (Attached via Breadboard)

LED Pinout

CIRCUIT CONNECTION

The GND of Arduino is being connected with the GND pin of GY-30.
The Digital Pin 2,3,4 and 5 of the Arduino Uno Board are being connected to the LED’s via Breadboard.
The VCC Pin of GY-30 is being connected with 3.3V Pin of the Arduino Uno which is recommended voltage for the given circuit.
The SDA Pin of GY-30 is connected with SDA Pin of Arduino for I2C communication.
The SCL Pin of GY-30 is connected with SCL Pin of Arduino Uno.
The ADDR Pin can connect with 2 devices of BH1750 with different addresses. But it depends on ADDR Pin status. But it is not included in this particular circuit.
- If ADDR = LOW , The address will be 0x23
- If ADDR = HIGH, The address will be 0x5C

NOTE: You can also connect SDA and SCL Pins of GY-30 (Light Sensor) with the Analog Pins A4 and A5 of the Arduino Uno.

LIBRARY REQUIRED

Include the Light Sensor (BH1750.h) Library:

First, you need to Open Sketch in Arduino IDE.
The, Click on Option Include Library.
Click on the option Manage Libraries and enter the name of Library in the Search Bar to see if it is installed or not.
If the Library is not installed then, click on the Library and Select the version and Click on Install Button.

CODE

Click to see code here: https://docs.google.com/document/d/e/2PACX-1vTdZvRTOqqRx7SHGIK63mTK9sb_pgiODJkKi6j7idJavMUWCA_g1NJLsauZZ4TO8lK55IGRha7xbUEj/pub?embedded=true

WORKING

Welcome to this Arduino based BH1750 Breakout Board Sensor Module which mainly consists of a serial clock Pin (SCL), Serial data pin (SDA), Power Supply (VCC), Address Pin (ADDR) and a Ground (GND) pin. The input is being transmitted towards the SDA and SCL pin ,i.e, A4 and A5 of the Arduino Uno respectively. The LED’s are being attached with the Arduino Digital Pin 2, 3, 4 and 5 via Breadboard. And the Output is being displayed on the serial monitor.

Its working principle depends upon the reflecting light from a light source and measurement of illuminance is done in terms of lux. Lux is also known as luxens which is responsible for the amount of illuminance in particular light source. With the BH1750 Light Sensor intensity you can directly measure the lux. The data which is output by this sensor is directly output in Lux (Lx). When objects which are lighted they get the 1 lx luminous flux in one square meter (in general), their light intensity is 1lx. It also has three measurement modes such as:

H-resolution with sensitivity 0.5 lux.
H-resolution with sensitivity 1 lux.
L-resolution with sensitivity 4 lux.

Block Diagram of GY-30:

After uploading the code

Press Ctrl+Shift+M to see the output on serial Monitor.

In the image given below you can see the Value of Light Intensity.

Battery operated	Yes,1 nos 9V battery included

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